<!DOCTYPE html>
<html>
<head>
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no"/>
    <style type="text/css">
        html { height: 100% }
        body { height: 100%; margin: 0; padding: 0 }
        #map-canvas { height: 100% }
    </style>
    <script type="text/javascript"
            src="https://maps.googleapis.com/maps/api/js?key=AIzaSyB7J1zsErb9_7jxNu5KU5kIENFObAQEbl0&sensor=false">
    </script>
    <script type="text/javascript">
      var map;
      function initialize() {
        var mapOptions = {
          center: new google.maps.LatLng(48.209331, 16.381302),
          zoom: 4
        };
        map = new google.maps.Map(document.getElementById("map-canvas"),
            mapOptions);
      }
      google.maps.event.addDomListener(window, 'load', initialize);

    </script>
</head>
<body>
<div id="map-canvas"></div>
</body>
</html>